公开(公告)号：US08674575B2

公开(公告)日：2014-03-18

申请号：US13000227

申请日：2009-06-19

Applicant: Kazuto Sakai ,  Yutaka Hashiba ,  Yosuke Otsubo ,  Yusuke Matsuoka ,  Norio Takahashi ,  Tadashi Tokumasu

Inventor： Kazuto Sakai ,  Yutaka Hashiba ,  Yosuke Otsubo ,  Yusuke Matsuoka ,  Norio Takahashi ,  Tadashi Tokumasu

IPC: H02K21/46 ,  H02K1/26 ,  H02K1/27

CPC classification number: H02K1/2766 ,  H02K21/028 ,  H02K21/04

Abstract: An increase of the magnetization current can be restrained during demagnetization and magnetization, and a variable speed operation can be achieved at a high power output over a wide range of from a low speed to a high speed. A rotor 1 is configured by a rotor core 2, permanent magnets 3 having a small value as the product of the coercivity and the thickness in the magnetization direction thereof, and permanent magnets 4 having a large value as the product. When reducing a flux linkage of the permanent magnets 3, a magnetic field directed to the reverse direction of the magnetization direction of the permanent magnets 3 due to a current of an armature coil is caused to act on them. When increasing a flux linkage of the permanent magnets 3, a magnetic field directed to the same direction as the magnetization direction of the permanent magnets 3 due to a current of an armature coil is caused to act on them. A short circuit coil 8 is located in a magnetic path part of each permanent magnet 4 other than the permanent magnets 3. A magnetic field due to a magnetization current induces an induced current to generate a magnetic field on the periphery of the short circuit coil 8. The generated magnetic field and the magnetization current generate a magnetic field to magnetize the permanent magnets 3.

Abstract translation: 在退磁和磁化期间可以抑制磁化电流的增加，并且可以在从低速到高速的宽范围内的高功率输出下实现可变速度操作。 转子1由转子铁心2构成，永久磁铁3的矫顽力与其磁化方向的厚度的乘积小，永久磁铁4的值大的值为乘积。 当减少永久磁铁3的磁链时，导致由于电枢线圈的电流而导致永久磁铁3的磁化方向的相反方向的磁场作用于它们。 当增加永磁体3的磁通量时，引起由于电枢线圈的电流而导致与永磁体3的磁化方向相同方向的磁场的作用。 短路线圈8位于永磁体3以外的永久磁铁4的磁路部分。由于磁化电流而产生的磁场引起感应电流，从而在短路线圈8的周围产生磁场 所产生的磁场和磁化电流产生磁场以磁化永磁体3。

公开(公告)号：US08569921B2

公开(公告)日：2013-10-29

申请号：US13403666

申请日：2012-02-23

Applicant: Kazuto Sakai ,  Yutaka Hashiba ,  Norio Takahashi ,  Kazuaki Yuuki ,  Makoto Matsushita ,  Daisuke Misu ,  Masanori Arata ,  Tadashi Tokumasu ,  Motoyasu Mochizuki ,  Kuniyuki Araki

Inventor： Kazuto Sakai ,  Yutaka Hashiba ,  Norio Takahashi ,  Kazuaki Yuuki ,  Makoto Matsushita ,  Daisuke Misu ,  Masanori Arata ,  Tadashi Tokumasu ,  Motoyasu Mochizuki ,  Kuniyuki Araki

IPC: H02K21/12

CPC classification number: H02K21/04 ,  H02K21/14

Abstract: According to one embodiment, a permanent-magnet type electric rotating machine has a stator, a magnetizing coil, a rotor and a case. The stator has an armature coil configured to form a magnetic circuit for driving. The magnetizing coil is configured to form a magnetic circuit for magnetizing. The rotor has a constant magnetized magnet, a rotor core and a variable magnetized magnet. The rotor core holds the constant magnetized magnet. The constant magnetized magnet is arranged closer to the magnetic circuit for driving than the variable magnetized magnet. The variable magnetized magnet is arranged closer to the magnetic circuit for magnetizing than the constant magnetized magnet.

Abstract translation: 根据一个实施例，永磁式旋转电机具有定子，磁化线圈，转子和壳体。 定子具有构造成形成用于驱动的​​磁路的电枢线圈。 磁化线圈构成为形成用于磁化的磁路。 转子具有恒定的磁化磁体，转子芯和可变磁化磁体。 转子芯保持恒定的磁化磁体。 恒定磁化磁体比可变磁化磁铁更靠近用于驱动的​​磁路布置。 可变磁化磁体比恒定磁化磁体更靠近用于磁化的磁路。

公开(公告)号：US20110175478A1

公开(公告)日：2011-07-21

申请号：US13000227

申请日：2009-06-19

Applicant: Kazuto Sakai ,  Yutaka Hashiba ,  Yosuke Otsubo ,  Yusuke Matsuoka ,  Norio Takahashi ,  Tadashi Tokumasu

Inventor： Kazuto Sakai ,  Yutaka Hashiba ,  Yosuke Otsubo ,  Yusuke Matsuoka ,  Norio Takahashi ,  Tadashi Tokumasu

IPC: H02K21/12

CPC classification number: H02K1/2766 ,  H02K21/028 ,  H02K21/04

Abstract: An increase of the magnetization current can be restrained during demagnetization and magnetization, and a variable speed operation can be achieved at a high power output over a wide range of from a low speed to a high speed. A rotor 1 is configured by a rotor core 2, permanent magnets 3 having a small value as the product of the coercivity and the thickness in the magnetization direction thereof, and permanent magnets 4 having a large value as the product. When reducing a flux linkage of the permanent magnets 3, a magnetic field directed to the reverse direction of the magnetization direction of the permanent magnets 3 due to a current of an armature coil is caused to act on them. When increasing a flux linkage of the permanent magnets 3, a magnetic field directed to the same direction as the magnetization direction of the permanent magnets 3 due to a current of an armature coil is caused to act on them. A short circuit coil 8 is located in a magnetic path part of each permanent magnet 4 other than the permanent magnets 3. A magnetic field due to a magnetization current induces an induced current to generate a magnetic field on the periphery of the short circuit coil 8. The generated magnetic field and the magnetization current generate a magnetic field to magnetize the permanent magnets 3.

Abstract translation: 在退磁和磁化期间可以抑制磁化电流的增加，并且可以在从低速到高速的宽范围内的高功率输出下实现可变速度操作。 转子1由转子铁心2构成，永久磁铁3的矫顽力与其磁化方向的厚度的乘积小，永久磁铁4的值大的值为乘积。 当减少永久磁铁3的磁链时，导致由于电枢线圈的电流而导致永久磁铁3的磁化方向的相反方向的磁场作用于它们。 当增加永磁体3的磁通量时，引起由于电枢线圈的电流而导致与永磁体3的磁化方向相同方向的磁场的作用。 短路线圈8位于永磁体3以外的永久磁铁4的磁路部分。由于磁化电流而产生的磁场引起感应电流，从而在短路线圈8的周围产生磁场 所产生的磁场和磁化电流产生磁场以磁化永磁体3。

公开(公告)号：US06329734B1

公开(公告)日：2001-12-11

申请号：US09510675

申请日：2000-02-22

Applicant: Norio Takahashi ,  Kazuto Sakai ,  Yutaka Hashiba ,  Masanori Arata ,  Hirotsugu Tsutsui

Inventor： Norio Takahashi ,  Kazuto Sakai ,  Yutaka Hashiba ,  Masanori Arata ,  Hirotsugu Tsutsui

IPC: H02K2100

CPC classification number: H02K1/246 ,  H02K1/32

Abstract: A permanent magnet-reluctance type rotating machine includes an annular stator having armature windings arranged on an inner periphery of the stator, a rotor rotatably arranged inside the stator and a plurality of permanent magnets disposed in a rotor core. One permanent magnet defining each pole is divided into two magnet pieces in a direction parallel to the magnetizing direction of the permanent magnets. Owing to the division of the magnet, the mass of each permanent magnet becomes small in comparison with that of the conventional machine, so that the centrifugal force applied on the magnet holes can be reduced. Consequently, the stress generating in the rotor core is decreased to allow the rotating machine to rotate at a higher speed.

Abstract translation: 一种永久磁铁磁阻式旋转电机，其特征在于，具有环形定子，该定子具有设置在所述定子的内周上的电枢绕组，可旋转地配置在所述定子内部的转子和设置在转子铁心中的多个永久磁铁。 定义每个极的一个永磁体在与永磁体的磁化方向平行的方向上被分成两个磁体片。 由于磁体的划分，与常规机器相比，每个永磁体的质量变小，从而可以减小施加在磁体孔上的离心力。 因此，转子铁芯中产生的应力减小，以使旋转机器以更高的速度旋转。

公开(公告)号：US06268677B1

公开(公告)日：2001-07-31

申请号：US09537408

申请日：2000-03-29

Applicant: Mikio Takabatake ,  Masanori Arata ,  Kazuto Sakai ,  Yutaka Hashiba ,  Yoshio Hashidate ,  Norio Takahashi ,  Koji Oishi ,  Shiro Amemori

Inventor： Mikio Takabatake ,  Masanori Arata ,  Kazuto Sakai ,  Yutaka Hashiba ,  Yoshio Hashidate ,  Norio Takahashi ,  Koji Oishi ,  Shiro Amemori

IPC: H02K2112

CPC classification number: H02K1/246 ,  H02K1/276 ,  H02K21/46

Abstract: A rotor is provided for a permanent magnet type rotating machine having a stator 1 with armature windings 11. The rotor 3 includes a rotor core 31 and a plurality of permanent magnets 32 arranged in the rotor core 31 so as to negate magnetic flux of the armature windings 11 passing through interpoles 3b. The rotor 3 is constructed so that the average of magnetic flux in an air gap 2 between the rotor 3 and the stator 1, which is produced by the permanent magnets 32 at the armature windings' de-energized, ranges from 0.1 [T] to 0.7 [T] and the ratio (Lq/Ld) of self-inductance of the magnetic portion in a hard-magnetizing direction (q-axis) to self-inductance in an easy-magnetizing direction (d-axis) under a rated load condition ranges from 0.1 to 0.8. Under these conditions, it is possible to realize the rotating machine which operates as an induction machine at the machine's starting and also operates as an synchronous machine at the rated driving due to smooth pull-in.

Abstract translation: 为具有具有电枢绕组11的定子1的永磁式旋转电机提供转子。转子3包括转子芯31和布置在转子芯31中的多个永久磁铁32，以抵消电枢的磁通量 绕组11穿过间极3b。 转子3被构造成使得在电枢绕组断电时由永磁体32产生的转子3和定子1之间的气隙2中的磁通量的平均值为0.1 [T]至 0.7 [T]和磁性部分在硬磁化方向（q轴）上的自感的容许比（Lq / Ld）与在额定负载下的易磁化方向（d轴）上的自感比 条件从0.1到0.8。 在这些条件下，可以实现在机器启动时作为感应电机工作的旋转机器，并且由于平滑的拉入而在额定驱动下作为同步电机工作。

公开(公告)号：US6087751A

公开(公告)日：2000-07-11

申请号：US94700

申请日：1998-06-15

Applicant: Kazuto Sakai

Inventor： Kazuto Sakai

IPC: H02K1/27 ,  H02K19/10 ,  H02K21/12

CPC classification number: H02K1/246

Abstract: A reluctance type rotating machine includes a stator having armature windings arranged on an inner periphery of the stator, a rotor having projection portion forming magnetic poles, and a plurality of permanent magnets arranged on both side faces of the projection portions. Owing to the provision of the permanent magnets, it is possible to restrain magnetic fluxes of the armature windings of the stator from leaking toward interpole portions between the magnetic poles. The power output of the machine can be improved by increased effective fluxes.

Abstract translation: 磁阻式旋转电机包括具有布置在定子的内周上的电枢绕组的定子，具有形成磁极的突出部分的转子和布置在突出部分的两个侧面上的多个永磁体。 通过设置永磁体，可以抑制定子的电枢绕组的磁通量向磁极之间的极间部分泄漏。 通过增加有效通量可以提高机器的功率输出。

公开(公告)号：US08796898B2

公开(公告)日：2014-08-05

申请号：US13139889

申请日：2009-12-15

Applicant: Yutaka Hashiba ,  Kazuto Sakai ,  Norio Takahashi ,  Kazuaki Yuuki ,  Masanori Arata ,  Yusuke Matsuoka ,  Motoyasu Mochizuki ,  Tadashi Tokumasu

Inventor： Yutaka Hashiba ,  Kazuto Sakai ,  Norio Takahashi ,  Kazuaki Yuuki ,  Masanori Arata ,  Yusuke Matsuoka ,  Motoyasu Mochizuki ,  Tadashi Tokumasu

IPC: H02K21/12 ,  H02K21/20 ,  H02K3/00

CPC classification number: H02K15/03 ,  H02K1/02 ,  H02K1/223 ,  H02K1/2766 ,  H02K21/028 ,  Y10T29/49009 ,  Y10T29/49012

Abstract: According to one embodiment, a rotor is configured by a rotor core and magnetic poles. Two or more types of permanent magnets are used such that each product of coercivity and thickness in the magnetization direction becomes different. A stator is located outside the rotor with air gap therebetween and configured by an armature core winding. At least one permanent magnet is magnetized by a magnetic field by a current of the armature winding to change a magnetic flux content thereof irreversibly. A short circuited coil is provided to surround a magnetic path portion of the other permanent magnet excluding the magnet changed irreversibly and a portion adjacent to the other permanent magnet where the magnetic flux leaks. A short-circuit current is generated in the short circuited coil by the magnetic flux generated by conducting a magnetization current to the winding. A magnetic field is generated by the short-circuit current.

Abstract translation: 根据一个实施例，转子由转子芯和磁极构成。 使用两种或更多种类型的永磁体，使得矫顽力和磁化方向上的厚度的每个乘积变得不同。 定子位于转子外部，其间具有气隙，并由电枢铁心绕组构成。 至少一个永磁体被电枢绕组的电流通过磁场磁化，以不可逆地改变其磁通量。 设置短路线圈以围绕除了不可逆地改变的磁体之外的另一个永磁体的磁路部分和与磁通量泄漏的另一个永久磁铁相邻的部分。 短路电流由短路线圈产生的磁通量通过向绕组施加磁化电流而产生。 由短路电流产生磁场。

公开(公告)号：US08179068B2

公开(公告)日：2012-05-15

申请号：US12375076

申请日：2007-07-24

Applicant: Kazuaki Yuuki ,  Kazuto Sakai ,  Hiroshi Mochikawa

Inventor： Kazuaki Yuuki ,  Kazuto Sakai ,  Hiroshi Mochikawa

IPC: H02P7/00

CPC classification number: H02P23/28 ,  H02K1/276 ,  H02K1/2766 ,  H02K15/03 ,  H02K21/042 ,  H02P21/0089 ,  H02P21/02 ,  H02P21/06 ,  H02P21/10 ,  H02P23/14 ,  Y02T10/643

Abstract: A variable-flux motor drive system including a permanent-magnet motor including a permanent magnet, an inverter to drive the permanent-magnet motor, and a magnetize device to pass a magnetizing current for controlling flux of the permanent magnet. The permanent magnet is a variable magnet whose flux density is variable depending on a magnetizing current from the inverter. The magnetize device passes a magnetizing current that is over a magnetization saturation zone of magnetic material of the variable magnet. This system improves a flux repeatability of the variable magnet and a torque accuracy.

Abstract translation: 一种可变磁通电动机驱动系统，包括永磁体，包括永磁体的永磁电动机，用于驱动永磁电动机的逆变器，以及磁化装置，以通过用于控制永磁体的磁通的磁化电流。 永磁体是可变磁体，其磁通密度根据来自逆变器的磁化电流而变化。 磁化装置通过在可变磁体的磁性材料的磁化饱和区域之上的磁化电流。 该系统提高了可变磁体的磁通重复性和转矩精度。

公开(公告)号：US20100327787A1

公开(公告)日：2010-12-30

申请号：US12918770

申请日：2009-02-16

Applicant: Kazuto Sakai ,  Kazuaki Yuuki

Inventor： Kazuto Sakai ,  Kazuaki Yuuki

IPC: H02P6/08 ,  H02K1/27 ,  H02K15/00 ,  B23P19/00

CPC classification number: H02K1/276 ,  H02K1/2766 ,  H02P21/22 ,  Y10T29/49009 ,  Y10T29/49822

Abstract: The present invention provides a permanent-magnet-type rotating electrical machine capable of realizing variable-speed operation in a wide range from low speed to high speed at high output and improving, in a wide operating range, efficiency, reliability, and productivity. A narrow magnetic path 11 is formed in a rotor core 2 of a rotor 1 at an inter-pole yoke that magnetically connects adjacent pole core portions 7 to each other, so that the narrow magnetic path is magnetically saturated with flux of a magnetic field created by a predetermined magnetizing current passed to an armature coil 21. Each of first permanent magnets 3 at each of the pole core portions 7 is magnetized with a magnetic field created by a magnetizing current passed to the armature coil 21, to irreversibly change the flux amount of the first permanent magnet.

Abstract translation: 本发明提供一种永磁式旋转电机，能够实现从低速到高速，高输出的宽范围内的变速操作，并且在广泛的运行范围，效率，可靠性和生产率方面得到改善。 窄磁路11形成在转子1的转子铁心2中的磁极彼此相互磁极连接的极间磁轭处，使得窄磁路被产生的磁场的磁通量磁饱和 通过预定的通过电枢线圈21的磁化电流。各磁极部7的每个第一永久磁铁3被通过电枢线圈21的磁化电流产生的磁场磁化，不可逆地改变磁通量 的第一个永久磁铁。

公开(公告)号：US20100301697A1

公开(公告)日：2010-12-02

申请号：US12745108

申请日：2008-11-25

Applicant: Norio Takahashi ,  Mikio Takabatake ,  Masanori Arata ,  Kazuto Sakai ,  Yutaka Hashiba ,  Wataru Ito ,  Tadashi Tokumasu ,  Masakatsu Matsubara

Inventor： Norio Takahashi ,  Mikio Takabatake ,  Masanori Arata ,  Kazuto Sakai ,  Yutaka Hashiba ,  Wataru Ito ,  Tadashi Tokumasu ,  Masakatsu Matsubara

IPC: H02K1/27

CPC classification number: H02K1/2766 ,  H02K2201/06

Abstract: A rotor for a rotating electrical machine suppresses demagnetization of permanent magnets without deteriorating motor characteristics, is low-cost, and is highly reliable. The rotor has a plurality of rotor cores (2) that are stacked together, a plurality of permanent magnets (6a, 6b) axially divided by the rotor cores (2) and circumferentially arranged on each of the rotor cores (2), to circumferentially form magnetic irregularities, and a rotor blank (14a) made of nonmagnetic material arranged between those of the rotor cores (2) that are adjacent to each other.

Abstract translation: 用于旋转电机的转子抑制永磁体的退磁而不会降低电动机特性，成本低，并且可靠性高。 转子具有堆叠在一起的多个转子铁芯（2），由转子铁芯（2）轴向分隔并沿圆周方向设置在每个转子铁芯（2）上的多个永磁体（6a，6b） 形成磁性不规则，以及由非磁性材料制成的转子坯体（14a），其布置在彼此相邻的转子芯（2）的那些之间。